.bganimation {
    background-image: url('../bg/背景效果20000.jpg');
    /* 设置第一帧图片 */
    animation: playFrames 10s steps(3) infinite;
    background-size: cover;
    animation-direction:alternate
    /* 定义动画效果 */
}

@keyframes playFrames {
    0% {
        background-image: url('../bg/背景效果20000.jpg')
    }

    0.414% {
        background-image: url('../bg/背景效果20001.jpg')
    }

    0.828% {
        background-image: url('../bg/背景效果20002.jpg')
    }

    1.242% {
        background-image: url('../bg/背景效果20003.jpg')
    }

    1.656% {
        background-image: url('../bg/背景效果20004.jpg')
    }

    2.07% {
        background-image: url('../bg/背景效果20005.jpg')
    }

    2.484% {
        background-image: url('../bg/背景效果20006.jpg')
    }

    2.8979999999999997% {
        background-image: url('../bg/背景效果20007.jpg')
    }

    3.312% {
        background-image: url('../bg/背景效果20008.jpg')
    }

    3.726% {
        background-image: url('../bg/背景效果20009.jpg')
    }

    4.14% {
        background-image: url('../bg/背景效果20010.jpg')
    }

    4.553999999999999% {
        background-image: url('../bg/背景效果20011.jpg')
    }

    4.968% {
        background-image: url('../bg/背景效果20012.jpg')
    }

    5.382% {
        background-image: url('../bg/背景效果20013.jpg')
    }

    5.795999999999999% {
        background-image: url('../bg/背景效果20014.jpg')
    }

    6.21% {
        background-image: url('../bg/背景效果20015.jpg')
    }

    6.624% {
        background-image: url('../bg/背景效果20016.jpg')
    }

    7.037999999999999% {
        background-image: url('../bg/背景效果20017.jpg')
    }

    7.452% {
        background-image: url('../bg/背景效果20018.jpg')
    }

    7.866% {
        background-image: url('../bg/背景效果20019.jpg')
    }

    8.28% {
        background-image: url('../bg/背景效果20020.jpg')
    }

    8.693999999999999% {
        background-image: url('../bg/背景效果20021.jpg')
    }

    9.107999999999999% {
        background-image: url('../bg/背景效果20022.jpg')
    }

    9.522% {
        background-image: url('../bg/背景效果20023.jpg')
    }

    9.936% {
        background-image: url('../bg/背景效果20024.jpg')
    }

    10.35% {
        background-image: url('../bg/背景效果20025.jpg')
    }

    10.764% {
        background-image: url('../bg/背景效果20026.jpg')
    }

    11.177999999999999% {
        background-image: url('../bg/背景效果20027.jpg')
    }

    11.591999999999999% {
        background-image: url('../bg/背景效果20028.jpg')
    }

    12.006% {
        background-image: url('../bg/背景效果20029.jpg')
    }

    12.42% {
        background-image: url('../bg/背景效果20030.jpg')
    }

    12.834% {
        background-image: url('../bg/背景效果20031.jpg')
    }

    13.248% {
        background-image: url('../bg/背景效果20032.jpg')
    }

    13.661999999999999% {
        background-image: url('../bg/背景效果20033.jpg')
    }

    14.075999999999999% {
        background-image: url('../bg/背景效果20034.jpg')
    }

    14.489999999999998% {
        background-image: url('../bg/背景效果20035.jpg')
    }

    14.904% {
        background-image: url('../bg/背景效果20036.jpg')
    }

    15.318% {
        background-image: url('../bg/背景效果20037.jpg')
    }

    15.732% {
        background-image: url('../bg/背景效果20038.jpg')
    }

    16.146% {
        background-image: url('../bg/背景效果20039.jpg')
    }

    16.56% {
        background-image: url('../bg/背景效果20040.jpg')
    }

    16.974% {
        background-image: url('../bg/背景效果20041.jpg')
    }

    17.387999999999998% {
        background-image: url('../bg/背景效果20042.jpg')
    }

    17.802% {
        background-image: url('../bg/背景效果20043.jpg')
    }

    18.215999999999998% {
        background-image: url('../bg/背景效果20044.jpg')
    }

    18.63% {
        background-image: url('../bg/背景效果20045.jpg')
    }

    19.044% {
        background-image: url('../bg/背景效果20046.jpg')
    }

    19.458% {
        background-image: url('../bg/背景效果20047.jpg')
    }

    19.872% {
        background-image: url('../bg/背景效果20048.jpg')
    }

    20.285999999999998% {
        background-image: url('../bg/背景效果20049.jpg')
    }

    20.7% {
        background-image: url('../bg/背景效果20050.jpg')
    }

    21.113999999999997% {
        background-image: url('../bg/背景效果20051.jpg')
    }

    21.528% {
        background-image: url('../bg/背景效果20052.jpg')
    }

    21.942% {
        background-image: url('../bg/背景效果20053.jpg')
    }

    22.355999999999998% {
        background-image: url('../bg/背景效果20054.jpg')
    }

    22.77% {
        background-image: url('../bg/背景效果20055.jpg')
    }

    23.183999999999997% {
        background-image: url('../bg/背景效果20056.jpg')
    }

    23.598% {
        background-image: url('../bg/背景效果20057.jpg')
    }

    24.012% {
        background-image: url('../bg/背景效果20058.jpg')
    }

    24.426% {
        background-image: url('../bg/背景效果20059.jpg')
    }

    24.84% {
        background-image: url('../bg/背景效果20060.jpg')
    }

    25.253999999999998% {
        background-image: url('../bg/背景效果20061.jpg')
    }

    25.668% {
        background-image: url('../bg/背景效果20062.jpg')
    }

    26.081999999999997% {
        background-image: url('../bg/背景效果20063.jpg')
    }

    26.496% {
        background-image: url('../bg/背景效果20064.jpg')
    }

    26.91% {
        background-image: url('../bg/背景效果20065.jpg')
    }

    27.323999999999998% {
        background-image: url('../bg/背景效果20066.jpg')
    }

    27.738% {
        background-image: url('../bg/背景效果20067.jpg')
    }

    28.151999999999997% {
        background-image: url('../bg/背景效果20068.jpg')
    }

    28.566% {
        background-image: url('../bg/背景效果20069.jpg')
    }

    28.979999999999997% {
        background-image: url('../bg/背景效果20070.jpg')
    }

    29.394% {
        background-image: url('../bg/背景效果20071.jpg')
    }

    29.808% {
        background-image: url('../bg/背景效果20072.jpg')
    }

    30.221999999999998% {
        background-image: url('../bg/背景效果20073.jpg')
    }

    30.636% {
        background-image: url('../bg/背景效果20074.jpg')
    }

    31.049999999999997% {
        background-image: url('../bg/背景效果20075.jpg')
    }

    31.464% {
        background-image: url('../bg/背景效果20076.jpg')
    }

    31.878% {
        background-image: url('../bg/背景效果20077.jpg')
    }

    32.292% {
        background-image: url('../bg/背景效果20078.jpg')
    }

    32.705999999999996% {
        background-image: url('../bg/背景效果20079.jpg')
    }

    33.12% {
        background-image: url('../bg/背景效果20080.jpg')
    }

    33.534% {
        background-image: url('../bg/背景效果20081.jpg')
    }

    33.948% {
        background-image: url('../bg/背景效果20082.jpg')
    }

    34.361999999999995% {
        background-image: url('../bg/背景效果20083.jpg')
    }

    34.775999999999996% {
        background-image: url('../bg/背景效果20084.jpg')
    }

    35.19% {
        background-image: url('../bg/背景效果20085.jpg')
    }

    35.604% {
        background-image: url('../bg/背景效果20086.jpg')
    }

    36.018% {
        background-image: url('../bg/背景效果20087.jpg')
    }

    36.431999999999995% {
        background-image: url('../bg/背景效果20088.jpg')
    }

    36.846% {
        background-image: url('../bg/背景效果20089.jpg')
    }

    37.26% {
        background-image: url('../bg/背景效果20090.jpg')
    }

    37.674% {
        background-image: url('../bg/背景效果20091.jpg')
    }

    38.088% {
        background-image: url('../bg/背景效果20092.jpg')
    }

    38.501999999999995% {
        background-image: url('../bg/背景效果20093.jpg')
    }

    38.916% {
        background-image: url('../bg/背景效果20094.jpg')
    }

    39.33% {
        background-image: url('../bg/背景效果20095.jpg')
    }

    39.744% {
        background-image: url('../bg/背景效果20096.jpg')
    }

    40.158% {
        background-image: url('../bg/背景效果20097.jpg')
    }

    40.571999999999996% {
        background-image: url('../bg/背景效果20098.jpg')
    }

    40.986% {
        background-image: url('../bg/背景效果20099.jpg')
    }

    41.4% {
        background-image: url('../bg/背景效果20100.jpg')
    }

    41.814% {
        background-image: url('../bg/背景效果20101.jpg')
    }

    42.227999999999994% {
        background-image: url('../bg/背景效果20102.jpg')
    }

    42.641999999999996% {
        background-image: url('../bg/背景效果20103.jpg')
    }

    43.056% {
        background-image: url('../bg/背景效果20104.jpg')
    }

    43.47% {
        background-image: url('../bg/背景效果20105.jpg')
    }

    43.884% {
        background-image: url('../bg/背景效果20106.jpg')
    }

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        background-image: url('../bg/背景效果20107.jpg')
    }

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        background-image: url('../bg/背景效果20108.jpg')
    }

    45.126% {
        background-image: url('../bg/背景效果20109.jpg')
    }

    45.54% {
        background-image: url('../bg/背景效果20110.jpg')
    }

    45.954% {
        background-image: url('../bg/背景效果20111.jpg')
    }

    46.367999999999995% {
        background-image: url('../bg/背景效果20112.jpg')
    }

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        background-image: url('../bg/背景效果20113.jpg')
    }

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        background-image: url('../bg/背景效果20114.jpg')
    }

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        background-image: url('../bg/背景效果20115.jpg')
    }

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        background-image: url('../bg/背景效果20116.jpg')
    }

    48.437999999999995% {
        background-image: url('../bg/背景效果20117.jpg')
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        background-image: url('../bg/背景效果20118.jpg')
    }

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        background-image: url('../bg/背景效果20119.jpg')
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        background-image: url('../bg/背景效果20120.jpg')
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        background-image: url('../bg/背景效果20121.jpg')
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        background-image: url('../bg/背景效果20122.jpg')
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        background-image: url('../bg/背景效果20123.jpg')
    }

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        background-image: url('../bg/背景效果20124.jpg')
    }

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        background-image: url('../bg/背景效果20125.jpg')
    }

    52.163999999999994% {
        background-image: url('../bg/背景效果20126.jpg')
    }

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        background-image: url('../bg/背景效果20128.jpg')
    }

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        background-image: url('../bg/背景效果20129.jpg')
    }

    53.82% {
        background-image: url('../bg/背景效果20130.jpg')
    }

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        background-image: url('../bg/背景效果20131.jpg')
    }

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    }

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        background-image: url('../bg/背景效果20133.jpg')
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        background-image: url('../bg/背景效果20134.jpg')
    }

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        background-image: url('../bg/背景效果20135.jpg')
    }

    56.303999999999995% {
        background-image: url('../bg/背景效果20136.jpg')
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        background-image: url('../bg/背景效果20137.jpg')
    }

    57.132% {
        background-image: url('../bg/背景效果20138.jpg')
    }

    57.546% {
        background-image: url('../bg/背景效果20139.jpg')
    }

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        background-image: url('../bg/背景效果20140.jpg')
    }

    58.373999999999995% {
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        background-image: url('../bg/背景效果20142.jpg')
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        background-image: url('../bg/背景效果20143.jpg')
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        background-image: url('../bg/背景效果20144.jpg')
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        background-image: url('../bg/背景效果20145.jpg')
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        background-image: url('../bg/背景效果20160.jpg')
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    91.08% {
        background-image: url('../bg/背景效果20220.jpg')
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    91.494% {
        background-image: url('../bg/背景效果20221.jpg')
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    91.908% {
        background-image: url('../bg/背景效果20222.jpg')
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        background-image: url('../bg/背景效果20223.jpg')
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        background-image: url('../bg/背景效果20225.jpg')
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    93.564% {
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    94.392% {
        background-image: url('../bg/背景效果20228.jpg')
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    94.806% {
        background-image: url('../bg/背景效果20229.jpg')
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    95.22% {
        background-image: url('../bg/背景效果20230.jpg')
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    95.634% {
        background-image: url('../bg/背景效果20231.jpg')
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    96.048% {
        background-image: url('../bg/背景效果20232.jpg')
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    96.46199999999999% {
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    97.704% {
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}